can't run any game

[Hyperknight13]

i had agame that didn't work "watchdogs" got the "0xc000007b error" so i watched a video to but some dll files into the system32 folder and the same files into SysWOW64 folder thats the video link if it helps
http://
noow the game works but any other game doesn't

i tried to instal DirectX again and i have this message
"an internal system error occurred
please refer to dxError and DirectX.log in your windows folder to determine problem"


please help

 

[Dunlop0078]

What are your pc's specs?

 

[Hyperknight13]

What are your pc's specs?

win 7 64x
gigabyte pa65 ud3 b3
core i3 2100
radeon HD 6770 vabor - x 1gb
8gb ram 1600mhz (2X4gb G.skill)

what is the point of this ?